Phenotypic Profiling

We perform phenotypic screening service to assess a compound's action in a micro-circuit including a multitude of physiological relevant receptors with primary neurons or human stem cell-derived cultures growing on a micro electrode array chip (tl_files/media/img/picture-icon.png). We compare the functional fingerprint of your new compound with profiles of your reference compounds or those in our substance database.

This allows:

  • Identifying the neuroactive concentration ranges based on multi-parametric concentration-response data (picomolar to micromolar)
  • Differentiating your new compounds against target-specific substances, endogenous ligands and standard of care drugs.
  • Gaining insight into the functional similarity to reference compounds at certain concentrations (e.g. therapeutic concentration of more than 30 clinical CNS drugs already tested by NeuroProof). This analysis is performed in a concentration-specific manner for the test compound.
  • Proposing clinical indication by sorting the profile into several drug classes (e.g. anticonvulsants, antipsychotics, antidepressants, pro-cognitives, analgesics and more).
  • Assess potential repurposing opportunities for your compounds which might rescue your compounds which development was stopped due to safety or efficacy concerns.
  • Elucidate potential side effects such as pro-convulsive or sedative (read: prediction of side effect).

 

tl_files/media/img/Phenotypic Screening/phenotypic-1a.png

Image: Activity profiled for concentration-response experiments of drugs from our database show obvious functional phenotypic similarities of drugs from one drug class, however, differences between drug classes. Heat maps show significant parameter changes in color codes for every concentration and thus, represents the compound profile. Estimated therapeutic concentrations were calculated based on literature data on plasma concentration and brain/plasma ratios.

 

We deliver:

  • The phenotypic profiling which characterizes a compound's action in the whole concert of all receptors it affects. Our experience shows that each compound exhibits a distinct and quantitatively assessable profile with unique properties.
  • A characterization of a compound's action established by our comprehensive multivariate data analysis. You receive a description of your compound's action on neuronal networks with a multitude of parameters (general activity, regularity, burst structure/strength, synchronicity/connectivity/communication).
  • An overall comparison to your reference compounds or known compounds of our database.

The following primary cell cultures are available:

  • frontal cortex
  • hippocampus
  • amygdala/hippocampus co-culture
  • midbrain
  • midbrain/cortex co-culture
  • spinal cord
  • hypothalamus
  • human induced pluripotent stem cell-derived neurons

These tissue cultures produce a highly reproducible activity patterns.

 

tl_files/media/img/Phenotypic Screening/pattern-classification-2.png

Image: TOP: example spike trains from 6 different primary tissue cultures after 28 DIV. Bottom: Self-recognition of brain-region-specific activity patterns [% of datasets] from primary cell cultures show that all tissue cultures produce reproducible activity patterns after 28 days in vitro. 4 classification experiments with 100 data sets each.

 

These tissue cultures from mice are dissected between embryonic day E14 and E18 depending on the tissue. We also establish cell cultures (e.g. co-cultures) based on your needs. Please contact us for more information.